AN2811 Datasheet, PDF (10/25 Pages) STMicroelectronics – High brightness LEDs are becoming a prominent source of lighting

General circuit description
AN2811
Table 2. Bill of material (continued)
Name
Value
Rated
Type
R2
R3
R4
R5
R6
R7
R8
R9, R12
R10
R11
R13
R14
T1 ⁽¹⁾
U1
6.8 kΩ
100 kΩ
56 kΩ
10 kΩ
10 Ω
82 kΩ
3 kΩ
1.2 Ω
3.3 kΩ
24 kΩ
2.7 kΩ
1 MΩ
T_EE10/11_TDK
VIPER17HN
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1 mH
Offline high voltage
converter
Resistor [0603]
Resistor [0603]
Resistor [0603]
Resistor [0603]
Resistor [0603]
Resistor [0603]
Resistor [0603]
Resistor [1206]
Resistor [0603]
Resistor [0603]
Resistor [0603]
Resistor [0603]
TDK flyback transformer
STMicroelectronics [DIP-7]
U2
TSM103W
Dual OP and voltage
reference
STMicroelectronics [SO-8]
1. T1, the transformer design, is shown in Section 3.4 on page 11. Table 3 gives the basic electrical
characteristics, Figure 8 shows the winding structure, and Figure 9 illustrates the bobbin outline.
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